Sonic the Hedgehog 2 Recomp

PC port of Sonic the Hedgehog 2

  • RecompilationPort Type
  • mstanDeveloper
  • 30 Sep 2026Page Updated
Sonic the Hedgehog 2

Details

Developer
mstan
Port Type
RecompilationA tool translated the game's original machine code into C automatically, which was then built as a native PC program.
AI Use
AI-assistedAn AI coding tool is credited as co-author on 55 of the repository's 128 commits. Source
Source Code
GitHub
Page Updated

Platform Support

  • Windows

ScreenshotsView All (6)

What you need: A ROM of Sonic the Hedgehog 2 (Rev A) for the Mega Drive / Genesis, dumped from your own cartridge.

Overview

Rollback NetplaySave StatesWidescreen

Sonic the Hedgehog 2 Recomp is a native Windows port of the Mega Drive Sonic the Hedgehog 2, made by mstan by statically recompiling the game’s 68000 code into C, with the video and sound chips emulated around it.

It adds rollback netplay for up to four players, save states, widescreen, an optional Sonic 3 & Knuckles style save menu and Super forms. The game is playable; one known issue is that the special stages run about twice as fast as they should.

The author says AI tools were used heavily in making it.

The download contains no game data. It needs a Sonic the Hedgehog 2 ROM (Rev A), dumped from your own cartridge.

How to Set It Up

  1. Download the Windows zip and extract it.
  2. Run the launcher and point it at your Sonic the Hedgehog 2 ROM (Rev A).
  3. Set widescreen, save menu and netplay options in the launcher, then start the game.
Go to Downloads

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